Weed Seeds Order Review Secondary Consultation Document
8.0 Appendix

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NAPPFAST Zones in Areas of Canada

This image illustrates plant hardiness zones (PHZ) within a map of Canada along with the area of Canada covered by each zone, as a percentage. This map allows for a representation of the potential distribution of a species in Canada based on the plant hardiness zones to which a species is thought to survive.

plant hardiness zones
NAPPFAST Zones in Areas of Canada
NAPPFAST Zone Area Of Canada (%) Description
2 14.5% As is seen in the light purple area in the map of Canada above, Plant Hardiness Zone (PHZ) 2 covers most of British Columbia, all of the agricultural areas in Alberta, Saskatchewan, Manitoba, Ontario and Quebec, and throughout the Maritime Provinces.
3 17.6% PHZ 3, distinguished using dark blue in the map, covers southern parts of all of the provinces from British Columbia to Quebec and most of the Maritime Provinces.
4 6.1% PHZ 4, the area in light blue, comprises of southern and coastal British Columbia, small areas in Alberta and Saskatchewan, southern Ontario and Quebec, and most of the Maritime Provinces.
5 4% As is seen in the dark green area in the map above, PHZ 5 covers southern and coastal British Columbia, extreme southern Ontario, extreme south-western Quebec, coastal New Brunswick and most of Nova Scotia, Prince Edward Island and Newfoundland.
6 1.5% PHZ 6, as is shown in light green, encompasses southern and coastal British Columbia, south-western Ontario, extreme southern Quebec, and parts of coastal New Brunswick and most of Nova Scotia and Newfoundland.
7 0.4% PHZ 7, that is the area in yellow, covers portions of British Columbia including most of Vancouver Island and south-western parts of the mainland extending north along the coast to the Queen Charlotte Islands.
8 0.5% PHZ 8, the beige area in the map of Canada, comprises of coastal British Columbia and Vancouver Island.
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